Hose coupling for vacuum cleaners



151 0. M. ANDERSON HOSE COUPLING FOR VACUUM CLEANERS Filed April 27, 1943 Patented Jan; 16, 1945 2,367,188 t ,nosnooortnye For. VACUUMCLEANERS lscanl VI; Anderson, New Conn L, 'a ss ig nor *8; ClarkQNew onnecticut Britain, Gonn.,

'gbmigfiphltpiil- 7 Serial No. 484550 ,This invention-relates;to a hose or i-pipe. coupling ,which while having general application, is

.particularly adapted for usein detachably seone anotheix.

j ILA in then objectof theiinvention is to ,provide animproved hose coupling which-will securely hold ithe telescoping parts together, which will prevent such parts from rattling, which will form an efie ctive air' seal ;;between the telescoping members, and'which, as externally viewed, has a neat and pleasing appearance.

Other objects will be in part obvious and'in part pointed out more in detail hereinafter.

The invention accordingly consists in the features of construction,combination of elements, and arrangement of parts which will be exempliproviding 'the tube with ahead or rib I4 which may be parti-circulanin cross section."

shoulder 14" isgenerally rearwardly iacin and outwardly and forwardlycinclined; i-SecuEe iftO fied in the construction hereafter set forth and the scope of the application of which will be indicated in the appended claims.

In the accompanying drawing: Figure l is a side view, partly in section and partly in elevation, of my improved coupling as applied to the end of a hose and the intake opening of a vacuum cleaner, the coupling being shown in engaged position;

Fig. 2 is a view similar to Fig. l but illustrat ing the coupling in disengaged condition; and

Fig. 3 is a perspective view of a portion of the I member for anchoring the resilient clamping ring to one of the pipe members.

Referring to the drawing, 1 have shown therein, by way of exemplification only, my improved coupling employed for securing a flexible hose A to the closure B of a tank-type vacuum cleaner such as is illustrated in the Anderson, et a1. Patent No.'2,245,9,53' granted June 17, 1941. The closure is shown as having an outer shell I0 and an inner In accordance with the present invention, the' tube I2 has, adjacent its outer or forward end, an external circumferential shoulder I4 which, in the illustrative embodiment shown. is formed by and surrounding the pipe :13 'is-a resilient-clamping ring 15 formed of rubber.orsotherisuitable elastic material. This ring is in the iolmiiof a sleeve and it'has,adjacent its rear end aninternal annular bead I I which: maybeparti-circular .in cross section. The .forward wall of the; head :I I constitutesaegenerally forwardly facing and inwardly and rearwardly/inclined shoulder VI 5 which is complementary to, and adaptedt engage behind, the shoulder I4. Inyithepresent-illustrative disclosuregthe internal peripheryof the re-v silient ringl5 -has,--forwardly of the-bead IT, a groove "I8 which isadapted to receive thebead .54 when the parts .are connectedtogether as shown in Fig-. 1. The resilient ring, adiacentits forward end, is connected to the pipe I3 by means of an anchoring member 20 which is in the form of a cylindrical piece fitted about the pipe I3 and having a radial flange 2| atits rear end which is received by an internal kerf or cut 22 provided in the resilient ring I5. The anchoring member is suitably secured to the pipe as by means of the rivet 23. By preference, the forward end of the resilient ring closely hugs the anchoring member 20.

Slidably mounted onthe pipe I3 and adapted to encircle the resilient ring I5 is a restraining sleeve or collar '25. This collar, at its rear end,

is of such internal diameter as to closely fit about the resilient ring when the coupling is in engaged position. The forward end of the collar is reduced, as at 26, so as to slidably fit about the pipe I3. Intermediate its ends, the collar has a circumferential internal bead 21 which engages the forward end of the resilient ring when the parts are in operative position. For the purpose of limiting the extent to which the collar 25 may be backed off of the ring I5, the pipe I3 is provided with a groove in which is seated a split ring 28.

It will be seen from Fig. 1 that, when the parts are in coupled position, the shoulder I6 of the resilient ring is engaged with the shoulder I4 of the tube I2 and the collar 25 is in encircling relation with respect to the ring I5 so that the parts are securely held together. The bead I4 is engaged in the groove I8. The collar 25 prevents outward expansion of the rear end of the clamping ring so that the bead ll of the ring cannot ride over the bead I4 of the tube I2 in the event that pressure is exerted in a direction tending to withdraw the pipe l3 from the tube l2. Furthermore, when the parts are in coupled relation, the resilient ring snugly encircles both of the pipe members so that an efiective air seal is provided therebetween. When it is desired to disconnect the parts, it is merely necessary to Withdraw the restraining sleeve 25 to the position shown in Fig. 2 and then pull the two pipe members apart during which operation the bead I! of the resilient ring will ride over the bead [4, the forward end of the resilient ring now being relatively free to flex outwardly. When it is desired to again connect the parts, it is merely necessary to slip the rear end of the pipe l3 into the tube I2 and, after the head I! is engaged behind the shoulder I4, slip the restraining collar rearwardly to the position shown in Fig. 1. These operations may be very quickly and easily carried out.

As many changes could be made in the above construction and many apparently widely different embodiments (if this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

I claim as my invention:

1. In combination, a pair of telescoping members, the outer one of said members having an external rearwardly facing shoulder, a resilient clamping ring of elastic material about the other of said members and having a continuous annular internal bead adapted to engage behind said shoulder, means for securing said ring to the inner telescoping member, and a restraining collar slidably mounted on said inner member and having a portion encircling said ring for preventing outward expansion thereof.

2. -In combination, a pair of telescoping members, one of said members having adjacent one end a rearwardly facing, forwardly and outwardly inclined shoulder, a resilient clamping ring comprising a rubber sleeve fitting about the second of said members and having adjacent its rear end a continuous circumferential'bead provided with a forwardly facing, rearwardly and inwardly inclined shoulder adapted to engage behind said first mentioned shoulder when the coupling is engaged, means adjacent the forward end of said ring for securing the same to the said second mentioned member, and a restraining collar slidably carried by said second mentioned member and adapted to be moved into and out of encircling relation to the rear end of said ring.

3. In combination, a pair of telescoping members, the outer of which has an external bead adjacent one end thereof, a resilient clamping ring closely fitting about the inner of said members and having adjacent its rear end'an internal circumferential bead adapted to engage behind said first bead, said ring having an internal kerf, a cylindrical anchor piece fitting and secured to said inner member and having a radial flange fitting in said kerf, a restraining collar having a portion slidably encircling said inner member and having a portion adapted to encircle the rear end of said clamping ring to prevent outward expansion thereof when the parts are in coupled condition.

. OSCAR M. ANDERSON. 

